Saw handle and blade connection



C. LARSDN. SAW HANDLE AND BLADE CONNECTION.

APPLICATION FILED FEB. 28. 192|.

Patented Feb. 7, 1922. Mm l.

UNITED STAT-Esv PATENT or-'Fics I CHARLES LABSN, 0F BURLINGTON, IOWA. y

saw HANDLE-AND BLADE CONNECTION.

ATo all whom t may concern:

Be it known that I, CHARLES. LARsoN, a citizen of the United States, residing at Burlington, in the county ofV Des Moines and State of Iowa, have invented certain new and useful Improvements in Saw Handle and Blade Connections; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to'make and use the same.V

The present invention relates to saws and similar implements, and aims to provide a novel and improved detachable connection between the blade and handle, whereby said parts can bereadily separated and the handle used for a number'of different blades. l Another object is the provision of novel interengagable portions onV the blade and handle, providing for the convenient bringing together of said parts, andthe rigid or firmattachment thereof to one another. A furtherobje'ct is the provision of such an implement in which the blade has slots vformed to 'engagervets or similar ymembers of the handle, for attaching the blade, and handle together in a novel manner, and means for preventing accidental detachment. l It is also an obj ect of the-invention to provide such a'device-which is simple and inexpensive in construction, as well as practical and efficient in use.. i

With the foregoing and other objects in View, which will be apparent as the description proceeds, Vthe invention resides in the construction and arrangement of parts hereinafter described and claimed, it being understood that changes can be made within the scope of what is claimed without departing from the spirit of the invention.

The invention is illustrated in the accompanying drawing, wherein Figure 1 is a side elevation of the saw showing the improvements embodied therein, a portion of the blade being broken away. Fig. 2 is a fragmentary view showing the handle in section with the blade in the kerf or slot thereof, and illustrating in dotted lines the position of the blade when attaching it to or detaching it from the handle.

Fig. 3 is a cross section on the line 3-3 of Fig. 1.

l Specicationof Letters Patent. Patented Feb, 7, 1922,

Application med February 2s, 1921'. 'serial No. 448,416. i

of, and for the purpose of securing theblade to the handle, rivets 10, 11 and12 or similar members are engaged transversely through the handle at points spaced longitudinally of they slot 9, and said rivetsv extend trans- I .versely through said slot. The handle 8 is made lof wood, as usual, and transverse metal plates 13 bear against the opposite sides of said4 handle for the swaging of the rivets. The handle end of the blade 7 has a bayonet or angular slot 14 to engage the rivet'lO, and also has arcuate slots 15, to engagel the rivets 11 and 12, and the tail of the slot 14 extends vaway from the slots 15while the slots 15 are curved around a center lying within the tail of said slot 14. This provides for the attachment of the blade and handle by a relative swinging movementthereof with fres ect to one another in their common plane.

hus,by positioning the blade and handle in the same plane at an angle with one another (the handle in the ullline position and the blade in the dotted line position, as shown in Fig. 2), they can vbe moved together to' bring the end of the blade into Athe slot 9 aoy and to move the rivet or member 10 into. thev `slot 14, after-which the blade and'handlev are shifted edgewiseto move thefrivet 101 into the tail of the slot 14. The blade and handle -are then swung relatively to one another on the rivet 10 as a pivot, whereby the rivets 11 Vand 12 move into the slots 1541s4 the handle Vand blade areV moved together.` The yslots 15 inY engaging the rivets 11, and 12 will prevent the edgewise movement of theblade and handle 'relatively to one another, and the rivet 10 engaging within the tail of the bayonet slot 14 will prevent the corresponding edges of the blade and handle from separating, thereby requiring a swinging movement of the parts on the rivet 10 in order to separate them. As shown,'the slot 14 and rivet 10 are at the lower end of the slot 9 and near the lower or toothed edge of the blade, and the pressure on the handle 8 during the use of the saw, will be in a direction opposite to that in which the saw is broken when separating the blade and handle. If desired, the intermediate rivet 11 and intermediate slot 15 can be eliminated, when only two rivets in the handle are wanted.

In order to prevent the accidental separation of the blade and handle, a spring Y catch is provided including a leaf spring 16 having one end secured by one end of the rivet 10 to the plate 13 at one 61de,

longitudinal and said Spring extends transversely of the pin saw across the end of the rivet 11. A 17 is secured to the free end portion of the spring and slides within an aperture 18 formed in the handle between the rivets 11 and 12. The blade 7 is formed with an aperture' 19 between the slots 15 to'register with the aperture 18 when the blade and handle are kswung together, thereby permitting the pin17 to .snap through theaperture 19 of the blade, so as to retain the blade in the kerf or slot 9 of the handle. By Vspringing the free end of the spring 16 away from the'handle, the pin 17 is readily drawn from the vaperture 19, thereby per`- mitting the joint between the blade and handle to be broken, to swing-them away fromone another on the rivetlO as a pivot,

and :the rivets 11 and 12 being removed from the slots 15 willV now permit the blade 7 to be shifted edgewise to remove the rivet 10-from the tail of the slot 14 and permit handle.

The blade and -handle are thus readily separated, which will permit of the-'use of a-'number of blades with' the same handle,

' .I blade.

' vHaving including blades of different ystyles for varions'fkindsof work.

Thesaw can also be used as a try-square, by having the edgeQO of the handle at rightfa'ngles with the straight edge 21 of the y thus described the invention, what is claimed as new is:- l 'Y l'. An 'implement comprising a handle lhaving a kerf, members'y carried 'by the -handle extending transversely through said kerf, Ya blade having an. end to fit in said 4Vkerf, having a Vbayonet', slot extending from said end to engage one of said members and another [slot extending from said end `of the blade'to engage'fthe other member, the

talof the bayonet slot lextending ftransseparation of the blade and vnaine to this specification in the 'two subscribing witnesses.

vblade is inserted in said kerf and the first named member engaged in thetailiof the bayonetslot, the handle and blade can be .swung inthe planethereof to bring them together and move the second Vnamed mem- N ber in the second named slot, and means for holding the-handle and i blade together against the swinging movement away from one another.

- 2. An implement comprising ia -handle having a kerf, rivets extending transversely through the handle and across, said' kerf, a blade having anend to fit-in said kerf, having a bayonet slotiextending.romsaidV end to engage one osaid rivet'sand another slot Y ,within the `tail ofthe bayonetslot for the entrance of the `secondY named member, soV

that when tlieblade is inserted in said kerf andV theV first named rivet' engagedl in seeondnamed rivet inthe seeondrnamed slot, and a leafs ring-secured flatly fto one' side of the hancleby one of-fsaid rivets and having" aY pin 'slifd'able transversely in swinging apart. l Y v v Y e 'Intestimony whereof I have'V signed Vmy CHARLES ,Liiiisoii f Witnesses:` y 5 1 v-JNo. MERCER, Y

`the tail of the bayonet slot,'the handle and Y' Ablade canV be swung together torbring the ythevhan'dle to engage through' said blade or preventing the "handle "and blade from Y v Y Y presenee of* 

